3861804 has 12 divisors (see below), whose sum is σ = 9010904. Its totient is φ = 1287264.

The previous prime is 3861751. The next prime is 3861811. The reversal of 3861804 is 4081683.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160897 + ... + 160920.

Almost surely, 2^3861804 is an apocalyptic number.

It is an amenable number.

3861804 is an abundant number, since it is smaller than the sum of its proper divisors (5149100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3861804 is a wasteful number, since it uses less digits than its factorization.

3861804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321824 (or 321822 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 3861804 is about 1965.1473227216. The cubic root of 3861804 is about 156.8905345378.

The spelling of 3861804 in words is "three million, eight hundred sixty-one thousand, eight hundred four".